2 results about "Slump flow" patented technology

This invention discloses a computer vision-based method and system for detecting the workability of concrete. It employs a non-contact visual sensing approach to simultaneously acquire video sequences of freshly mixed concrete in a free-flowing state at both the macroscopic slump flow scale and the microscopic particle migration scale. An improved spatiotemporal feature pyramid network is used to extract multi-scale morphological features from the video sequences, obtaining a multi-scale visual feature set including the flow profile evolution rate, surface ripple spectrum, aggregate suspension trajectory, and paste coating state. A graph neural network model integrating prior knowledge of fluid mechanics is constructed to map discrete visual features to continuous rheological parameters, outputting workability indicators such as slump, spread, yield stress, and plastic viscosity in real time. This invention significantly improves the level of intelligent quality control in concrete production.

The application discloses a normal-temperature-synthesized concrete viscosity reducer and a preparation method thereof, and belongs to the technical field of building materials. The concrete viscosity reducer comprises the following components: liquid polyether 60-75% by mass, unsaturated carboxylic acid monomer 3-6%, unsaturated functional monomer 0.05-0.5%, oxidizing agent 0.1-0.5%, reducing agent 0.03-0.2%, chain transfer agent 0.05-0.3%, alkali solution 1-3%, and the rest is deionized water. The viscosity reducer prepared by the application can obviously reduce the viscosity of concrete mixture, can be synthesized at normal temperature, has low production energy consumption and cost, can increase economic benefits, has the characteristics of low mixing amount, and can obviously reduce the inversion slump flow cylinder emptying time of high-strength concrete.